There are two series of adapters, the System I, and System II. System I components fit common smaller digital cameras, and are based on an M37 thread standard. System II components fit larger cameras and camcorders, and are based on a larger Sp54 thread standard. Though it may sound complex, the system is quite simple.
There are two parts required to adapt any camera;
•First, you will need to select the specific Digital T-Ring, which has external threads that match the lens threading of your camera (see individual T-Ring listings, for cameras not specified contact your camera manufacturer or dealer to determine your camera's thread size). The Digital T-Ring will convert the camera threads to either an internal M37 (System I) or Sp54 (System II) thread.
•Next, a Digital T-Adapter converts the M37 (System I) or Sp54 (System II) Digital T-ring thread to a standard internal T-2 thread, for attachment to any T-2 threaded accessory (ie, OPFA).
Note: Some cameras (ie, Casio, Nikon 5700) incorporate large threads that mount accessory lenses or add-on adapters to protect the zoom lens. These adapters often present standard threads that will work with one of our Digital T-Rings.
Weight - 0.021kg
Inner Connection (lens sided) - Thread, T-2 (M42 x 0,75)
Outer Connection (eyepiece/-camera-sided) - Thread, M37
Adaptable to - Sony-Video-Cameras
Compatible Brands - Astro T-2, Baader Planetarium
Type of Adapter - Camera Adapter